1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.servlet.filters.cache;
24  
25  import com.liferay.portal.kernel.cache.MultiVMPoolUtil;
26  import com.liferay.portal.kernel.cache.PortalCache;
27  import com.liferay.portal.kernel.util.StringPool;
28  import com.liferay.portal.kernel.util.Validator;
29  import com.liferay.util.servlet.filters.CacheResponseData;
30  
31  /**
32   * <a href="CacheUtil.java.html"><b><i>View Source</i></b></a>
33   *
34   * @author Alexander Chow
35   * @author Michael Young
36   */
37  public class CacheUtil {
38  
39      public static String CACHE_NAME = CacheUtil.class.getName();
40  
41      public static void clearCache() {
42          _cache.removeAll();
43      }
44  
45      public static void clearCache(long companyId) {
46          clearCache();
47      }
48  
49      public static CacheResponseData getCacheResponseData(
50          long companyId, String key) {
51  
52          if (Validator.isNull(key)) {
53              return null;
54          }
55  
56          key = _encodeKey(companyId, key);
57  
58          CacheResponseData data =
59              (CacheResponseData)MultiVMPoolUtil.get(_cache, key);
60  
61          return data;
62      }
63  
64      public static void putCacheResponseData(
65          long companyId, String key, CacheResponseData data) {
66  
67          if (data != null) {
68              key = _encodeKey(companyId, key);
69  
70              MultiVMPoolUtil.put(_cache, key, data);
71          }
72      }
73  
74      private static String _encodeKey(long companyId, String key) {
75          StringBuilder sb = new StringBuilder();
76  
77          sb.append(CACHE_NAME);
78          sb.append(StringPool.POUND);
79          sb.append(companyId);
80          sb.append(StringPool.POUND);
81          sb.append(key);
82  
83          return sb.toString();
84      }
85  
86      private static PortalCache _cache = MultiVMPoolUtil.getCache(CACHE_NAME);
87  
88  }